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OpTIONAl SySTEm TESTS
The following tests are available for verifying proper
operation of various functions of the gas detection
system. The first three are accessed from the Display
Test screen.
(A "Device Test" screen is available
for performing the same tests on HART enabled
detectors.)
Main Menu
Process Vars
Display Test
Display Status
Device Status
Self Test
Display Setup
Response Test
Device Setup
Loop Test
Device Cal
D/A Trim
Display Test
Device Test
Self-Test
This test commands the UD10 to perform a fully
automatic internal test. At the completion of the test,
the UD10 will indicate a pass or fail.
Response Test
This test inhibits the UD10's outputs, thereby providing
a means of testing the system by applying gas to the
detector without activating any alarms or affecting the
output.
loop Test
This test temporarily forces the UD10's 4-20 mA output
to a specific level. This is an easy way to test the
output signal of the UD10 for accuracy, to verify the
capabilities of the system, and to verify the input signal
of a receiver. To perform this test, connect a current
meter to the output loop. Navigate to Display Test and
select Loop Test, then follow the prompts on the UD10
Screen.
If the Response Test and Loop Test are
not terminated by the operator, the test will
automatically time out after ten minutes and the
UD10 will return to normal operation.
4.3
noTe
Functional Test
A Functional Test (bump test) can be performed at any time
to verify proper operation and calibration of the system.
Since this test does not inhibit the UD10's outputs, secure
any output devices prior to performing the test to prevent
unwanted actuation.
HISTORy
There are two separate histories, one for the display
and one for the detector (if available). Both will state
the number of hours that the unit has been operating,
and the highest and lowest recorded temperature (with
time and date stamp).
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